In California, and many states in the US, 91 is the highest you can get without trying to find a rare station that sells unleaded race gas at almost triple the cost.
Maybe ratings are different in other countries, don't know.
The US uses an average of RON (research octane number) and MON (motor octane number), hence "(M+N)/2" on the pumps. Europe tends to use RON alone.
The MON test is more stressful (higher rpm, more timing advance), so octane is 8-12 points lower, so when you average it with RON you get a number at the pump typically 4-5 points lower (with some variation) than the pure RON number Euros use. So 91/93 here would be listed as 95/98ish there.
this is a silly poll and op. you don't sign up, you don't say where your from and you assert that 94 octane is REQUIRED all caps. why? did the '23 owners manual change?
my usa owners manual specifically states that 91 octane is recommended. using 87 octane will reduce performance and gas mileage if you see any difference at all. the engine mapping adjusts to the octane you put in. probably even 85 octane would not cause any negative effects the way most people drive. if your going to have fun with wot quite a bit it makes no sense to make the engine adjust to lower than recommended 91 octane. but if you are basically just daily driving the stinger the lower octane will be fine.
I've been on this forum since 2017 or 2018 and this is the first I've ever heard this nonsense. 91 octane is the highest you can get in my Province here in Canada, I've never had so much as a hiccup from running it.
I've been on this forum since 2017 or 2018 and this is the first I've ever heard this nonsense. 91 octane is the highest you can get in my Province here in Canada, I've never had so much as a hiccup from running it.
The US uses an average of RON (research octane number) and MON (motor octane number), hence "(M+N)/2" on the pumps. Europe tends to use RON alone.
The MON test is more stressful (higher rpm, more timing advance), so octane is 8-12 points lower, so when you average it with RON you get a number at the pump typically 4-5 points lower (with some variation) than the pure RON number Euros use. So 91/93 here would be listed as 95/98ish there.
This is what I'm thinking is happening because the octane numbers are way off from what I'm used to in the states and more like what I've seen when I've been in Europe.
Unfortunately, I'm not sure what the actual conversion ratio is between US/Canada and Europe when it comes to octane ratings at the pumps.
I can say this, OP, if you're still listening in: for us in the US our manuals say 91 or better is preferred; do not use anything under 87--for our numbers. I think your manual might say the same but for the octane numbers your country uses. According to the manual, anything between 87 and 91 (for us) will work, but at reduced power and gas milage. How much I'm not sure. I think anything below 87 cannot be compensated for and you might get pinging and detonation.
For your numbers, I would think they scale the same. Whatever your manual recommends or higher will give good results. Anything less will give you less power and gas milage. There is likely a number that is the absolute minimum octane you can run in your manual, so you should never fill up with less than that.
When I first got the car they filled it with 87 octane. Got fuel codes for both banks. Added octane booster and been on 91 ever since. Anything higher than 91 will be corn juice, and I'd need a tune and HPFP for that
Not sure where you'd find 94 octane regularly at typical stations. I have only had the car a short time, but I'm actively seeking the couple of stations in my area that have 93 octane, and sticking with 91 anytime I can't get to the 93 pumps. I've run both since I had the car and haven't noticed any appreciable difference. Assuming I mod and especially get a tune, I'll probably always do 93 and keep a couple bottles of octane booster on hand in case of any trouble.
When I first got the car they filled it with 87 octane. Got fuel codes for both banks. Added octane booster and been on 91 ever since. Anything higher than 91 will be corn juice, and I'd need a tune and HPFP for that
My sales guy filled it with 87 as well although I didn’t have any issues. It seemed to use up the fuel quicker but no codes or anything. I was pissed though lol, he tried to tell me the recommended fuel was regular and I was like “She needs premium dude! PREMIUM!!!” :^D
When I first got the car they filled it with 87 octane. Got fuel codes for both banks. Added octane booster and been on 91 ever since. Anything higher than 91 will be corn juice, and I'd need a tune and HPFP for that
You can go up to about E30 without upgrading the HPFP, you do need a tune though to take advantage. I was running map4 on my jb4 with E30 for a while, definitely a huge improvement over map 1 or 2, but I don't have E85 that close to me to run it on a daily basis.
I've been on this forum since 2017 or 2018 and this is the first I've ever heard this nonsense. 91 octane is the highest you can get in my Province here in Canada, I've never had so much as a hiccup from running it.
